I've been using Qtella for quite some time now, and I really like it (esp. now that more and more users are pooping up in Gnutella network thanks to MusicCity/Morpheus) ;-)

I got some small problems though:
1) Qtella 0.4.0 crashes after I right-click and select "block host" in the context menu at any ongoing upload.

2) What is "HostCache" tab for and how does it work? I selected "Enable HostCache" but it doesn't do anything.

3) If I want to resume an incomplete download, Qtella starts a new one!

4) Just a small thing but next version should list Morpheus (MRPH) and Gnucleus (GNUC) in the Stats tab - it looks like 40-50% of Gnutella users are now on Morpheus! ;-)